CN111697522A - Novel exposed wave dissipation fixing device for landing section of submarine cable - Google Patents
Novel exposed wave dissipation fixing device for landing section of submarine cable Download PDFInfo
- Publication number
- CN111697522A CN111697522A CN202010428500.0A CN202010428500A CN111697522A CN 111697522 A CN111697522 A CN 111697522A CN 202010428500 A CN202010428500 A CN 202010428500A CN 111697522 A CN111697522 A CN 111697522A
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- submarine cable
- cable
- fixing device
- flat steel
- landing section
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a novel exposed-cable landing section anti-exposure wave dissipation fixing device, which comprises a cable trench, a submarine cable arranged at the bottom of the cable trench, and backfill filled in the cable trench, wherein a first upper anchor ear and a first lower anchor ear are respectively arranged above and below the submarine cable, and are respectively arranged in arc-shaped structures at the positions at the upper end and the lower end of the submarine cable, and extend towards the two ends to form fixedly connected extension parts; the two ends of the first upper anchor ear are fixedly connected with bent flat steel respectively, and the top end of the bent flat steel is fixedly connected with a wave dissipation block placed on the surface of the landing zone sea bed. The novel anchor ear welded with the bent flat steel is adopted to fix the submarine cable in the cable trench, and the upper end of the bent flat steel is connected with the I-shaped wave dissipation block placed on the surface of the submarine bed of the cable trench, so that the aim of fixing the relative position of the submarine cable and the surface of the submarine bed is fulfilled, the scouring of waves is reduced, and the submarine cable is prevented from being exposed.
Description
Technical Field
The invention belongs to the technical field of offshore energy and offshore submarine cable engineering, and particularly relates to a novel exposed-wave-dissipation-preventing fixing device for a submarine cable landing section.
Background
With the implementation of the "ocean Enhance" strategy, industries such as offshore energy development, island power transmission and the like are rapidly developed, wherein the industries all relate to the laying of submarine cables and the landing of submarine cables. According to the practice of a plurality of established projects, the possibility that the landing section of the submarine cable is exposed after the submarine cable is washed for a period of time is high, and the exposed submarine cable is easy to be damaged by external force, so that great challenge is brought to the engineering safety management of the submarine cable. If the offshore energy development is adopted, once the bare submarine cable at the landing section is damaged, the large-area power failure of the whole length is caused, the maintenance time of the submarine cable is long, and the economic loss is immeasurable; if the engineering is an island power transmission engineering, once the exposed submarine cable at the landing section is damaged, the power failure of the whole island can be caused, and the economic and social influences are severe.
Based on the situation, the invention provides a novel exposed-wave-dissipation-preventing fixing device for the landing section of a submarine cable, which can effectively solve the problems.
Disclosure of Invention
The invention aims to provide a novel exposed wave dissipation fixing device for a landing section of a submarine cable. The novel cable fixing device adopts the upper and lower hoops welded with the bent flat steel to fix the submarine cable in the cable trench, and the top end of the bent flat steel is connected with the twisted I-shaped wave dissipation block placed on the surface of the submarine bed of the cable trench, so that the aim of fixing the relative position of the submarine cable and the surface of the submarine bed is fulfilled, the scouring of waves is reduced, and the submarine cable is prevented from being exposed.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a novel fixing device for preventing exposed sea cable landing sections from dissipating waves comprises a cable trench, sea cables placed at the bottom of the cable trench and backfill filled in the cable trench, wherein a first upper anchor ear and a first lower anchor ear are respectively arranged above and below the sea cables, the first upper anchor ear and the first lower anchor ear are respectively arranged at the upper end and the lower end of the sea cables in an arc-shaped structure, and extend towards the two ends to form fixedly connected extension parts; the two ends of the first upper anchor ear are fixedly connected with bent flat steel respectively, and the top end of the bent flat steel is fixedly connected with a wave dissipation block placed on the surface of the landing zone sea bed.
Preferably, the two extending parts which are distributed vertically are parallel and attached to each other, and the two extending parts are matched and connected with the nut after penetrating through the extending parts through bolts, so that the first upper anchor ear and the first lower anchor ear clamp the submarine cable, and a stable structure is formed.
Due to the structure, the two ends of the first upper hoop and the first lower hoop can be better and tightly combined, looseness is reduced, and the assembly is simple and convenient to construct.
More preferably, a rubber cushion layer is arranged between the submarine cable and the first upper anchor ear and between the submarine cable and the first lower anchor ear in a clamping mode.
Due to the structure, the rubber cushion layer wraps the submarine cable, so that the damage to the submarine cable caused by the hoop during movement can be effectively avoided, and the integrity of the submarine cable under the surface of the submarine bed is ensured.
Preferably, the bent flat steel is wavy, and the height difference between adjacent bent ends is 30200 mm.
Due to the structure, the adjacent bending end height difference in a certain range is set, the elasticity of the bent flat steel in the length direction can be effectively improved, certain adaptability is realized to different submarine cable burial depths, and the positions of the submarine cables cannot be influenced by abnormal conditions such as scouring and sinking of the wave dissipation blocks.
More preferably, the length of the bent flat steel before bending is 2000-6000 mm, and the length of the bent flat steel after bending is 10004000 mm.
Most preferably, the bent flat steel has a thickness of 1040mm and a width of 2060mm in the length direction of the submarine cable.
Due to the structure, the thickness and the length of the bent flat steel within a certain range are set, balance between the rigidity of the bent flat steel and the weight of the wave dissipation block is ensured, and relative burial depth of the submarine cable and the submarine surface is fixed.
Preferably, a second upper anchor ear and a second lower anchor ear are arranged between the top end of the bent flat steel and the wave dissipation block and are fixedly connected with the nut in a matched mode through bolts.
More preferably, the second upper hoop is fixedly connected with the top end of the bent flat steel through welding.
Preferably, the wave dissipation block is one of a twisted I-shaped block, a fence plate, a quadrangular pyramid and a quadrangular hollow block.
Preferably, the two ends of the first upper hoop are fixedly connected with the bottom ends of the bent flat steels respectively through welding.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1) the wave dissipation block can effectively reduce the scouring of waves to the landing part of the submarine cable and reduce the risk of exposing the submarine cable at the landing section.
2) The relative burial depth of the submarine cable and the surface of the sea bed is fixed by utilizing the rigidity of the bent flat steel and the weight of the wave dissipation block.
3) The bent flat steel can have certain adaptability to different submarine cable burial depths, and the positions of the submarine cables cannot be influenced by abnormal conditions such as scouring and sinking of the wave dissipation blocks.
4) The front construction does not need welding, and different parts only need to be mechanically connected through bolts.
Drawings
FIG. 1 is a schematic cross-sectional view of the exposed-wave-dissipating fixing device for the landing section of a submarine cable according to the present invention;
fig. 2 is a schematic structural diagram of an overlooking structure of an I-I surface of the bare-exposed wave dissipation fixing device for the landing section of the submarine cable.
Reference numerals: 1-cable trench; 2-sea cable; 3-backfilling; 4-a rubber cushion layer; 5-bending flat steel; 6-wave eliminating block; 41-a first upper hoop; 42 a first lower anchor ear; 43-a second upper hoop; 44-a second lower hoop; 401-an extension; 71-bolts; 72-nut.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1 and 2, a novel exposed-cable landing section anti-exposure wave dissipation fixing device comprises a cable trench 1, a submarine cable 2 placed at the bottom of the cable trench 1, and backfill soil 3 backfilled in the cable trench 1, wherein a first upper anchor ear 41 and a first lower anchor ear 42 are respectively arranged above and below the submarine cable 2, and the first upper anchor ear 41 and the first lower anchor ear 42 are respectively arranged at the upper end and the lower end of the submarine cable 2 and are respectively provided with an arc-shaped structure and extend towards the two ends to form extension parts 401 fixedly connected; the two ends of the first upper hoop 41 are fixedly connected with bent flat steels 5 respectively, the top ends of the bent flat steels 5 are fixedly connected with I-shaped twisting wave dissipation blocks 6 placed on the surface of the landing zone sea bed, and the two ends of the first upper hoop 41 are fixedly connected with the bottom ends of the bent flat steels 5 respectively through welding.
Further, in another embodiment, in order to enable the upper and lower anchor ears to better fix the submarine cable 2, the two extending portions 401 distributed vertically are parallel and attached to each other, and pass through the extending portions 401 through the bolts 71 and then are connected with the nuts 72 in a matching manner, so that the first upper anchor ear 41 and the first lower anchor ear 42 clamp the submarine cable 2, thereby forming a stable structure.
Further, in another embodiment, in order to better fix the submarine cable 2 and prevent the submarine cable 2 from being directly extruded and deformed by the upper and lower anchor ears, a rubber cushion layer 4 is interposed between the submarine cable 2 and the first upper anchor ear 41 and the first lower anchor ear 42, so as to achieve the effects of stabilizing the structure and protecting.
Further, in another embodiment, the bent flat steel 5 is wavy, and the height difference between adjacent bent ends is 30-200 mm; the length of the bent flat steel 5 before bending is 2000-6000 mm, and the length after bending is 1000-4000 mm; the thickness of crooked band steel 5 is 10 ~ 40mm, and the width of 2 length directions of coastal cable is 20 ~ 60 mm.
Further, in another embodiment, for convenience of assembly and construction, a second upper anchor ear 43 and a second lower anchor ear 44 are arranged between the top end of the bent flat steel 5 and the twisted i-shaped wave dissipating block 6, and are fixedly connected with a nut 72 through a bolt 71 in a matching manner, wherein the second upper anchor ear 43 is fixedly connected with the top end of the bent flat steel 5 through welding.
The working principle of the invention is as follows:
firstly, excavating a cable trench 1, wherein for construction convenience, a bolt 71 and a first lower anchor ear 42 are firstly connected into a whole and are placed in the cable trench 1, and then a submarine cable 2 wrapped with a rubber cushion layer 4 is placed on the lower anchor ear 42; then, the first upper anchor ear 41 is placed, the nuts 72 on both sides of the submarine cable are tightened, and the first upper anchor ear 41 fixed with the submarine cable 2 can be welded and connected with the lower end of the bent flat steel 5 in a factory. The upper end of the bent flat steel 5 is connected with the twisted I-shaped wave dissipation block 6 through a second upper anchor ear 43, a second lower anchor ear 44, a bolt 71 and a nut 72 or in a pre-embedded mode, wherein the second upper anchor ear 43 above the twisted I-shaped wave dissipation block 6 can be welded with the top end of the bent flat steel 5 in advance. After the preorder work is finished, covering backfill 3 again to the surface of the landing section sea bed.
In order to improve the durability of the device, the twisted I-shaped wave dissipation block 6 can be subjected to anticorrosion protection through silane impregnation, the first upper hoop 41, the first lower hoop 42, the second upper hoop 43, the second lower hoop 44 and the bent flat steel 5 can be protected through a maritime work heavy anticorrosion coating, and the bolt 71 and the nut 72 can be subjected to durability protection through a zinc plating mode. The specific number of the twisted I-shaped wave dissipation blocks 6 can be determined according to the length of the submarine cable 2 to be protected and the scouring condition of the submarine cable 2.
Further, it should be noted that: for the sake of clarity of the structure (sea cable fixing device) in the cable trench 1, the backfill 3 shown in fig. 1 and 2 of the description is only a partial structure (actually filling the cable trench to the surface of the sea bed at the landing zone) and should not be taken as limiting the scope of the present invention.
According to the description and the drawings of the invention, a person skilled in the art can easily manufacture or use the novel exposed sea cable landing section wave-dissipating fixing device and can produce the positive effects recorded in the invention.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a novel sea cable landing section prevents exposing unrestrained fixing device that disappears, includes cable pit (1), and places sea cable (2) bottom cable pit (1) to and backfill (3) in cable pit (1), its characterized in that: a first upper hoop (41) and a first lower hoop (42) are respectively arranged above and below the submarine cable (2), and the first upper hoop (41) and the first lower hoop (42) are respectively arranged in arc-shaped structures at the positions at the upper end and the lower end of the submarine cable (2) and extend towards the two ends to form extension parts (401) which are fixedly connected; the two ends of the first upper hoop (41) are fixedly connected with bent flat steel (5) respectively, and the top end of the bent flat steel (5) is fixedly connected with a wave dissipation block (6) placed on the surface of the landing zone sea bed.
2. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1, wherein: the two extending parts (401) which are distributed up and down are parallel and attached to each other, and penetrate through the extending parts (401) through bolts (71) to be matched and connected with nuts (72), so that the first upper hoop (41) and the first lower hoop (42) clamp the submarine cable (2), and a stable structure is formed.
3. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1 or 2, which is characterized in that: and a rubber cushion layer (4) is clamped between the submarine cable (2) and the first upper anchor ear (41) and the first lower anchor ear (42).
4. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1, wherein: the bent flat steel (5) is wavy, and the height difference of adjacent bent ends is 30-200 mm.
5. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1 or 4, which is characterized in that: the length of the bent flat steel (5) before bending is 2000-6000 mm, and the length after bending is 1000-4000 mm.
6. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 5, wherein: the thickness of crooked band steel (5) is 10 ~ 40mm, and the width along sea cable (2) length direction is 20 ~ 60 mm.
7. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1, wherein: a second upper hoop (43) and a second lower hoop (44) are arranged between the top end of the bent flat steel (5) and the wave dissipation block (6) and are fixedly connected with a nut (72) in a matched mode through a bolt (71).
8. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 7, wherein: and the second upper hoop (43) is fixedly connected with the top end of the bent flat steel (5) through welding.
9. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1, wherein: the wave dissipation block (6) is one of a twisted I-shaped block, a fence plate, a quadrangular pyramid and a quadrangular hollow square block.
10. The novel submarine cable landing section bare wave-dissipating fixing device according to claim 1, wherein: and two ends of the first upper hoop (41) are respectively fixedly connected with the bottom ends of the bent flat steels (5) through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010428500.0A CN111697522B (en) | 2020-05-20 | 2020-05-20 | Novel exposed wave dissipation fixing device for landing section of submarine cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010428500.0A CN111697522B (en) | 2020-05-20 | 2020-05-20 | Novel exposed wave dissipation fixing device for landing section of submarine cable |
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| CN111697522A true CN111697522A (en) | 2020-09-22 |
| CN111697522B CN111697522B (en) | 2021-11-05 |
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| CN111697522B (en) | 2021-11-05 |
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